Behind the scenes tours of Tower Bridge

As Tower Bridge doesn’t open for boats as often during the winter months, they’re resuming their behind-the-scenes tours that include trips into the huge bascule chambers under the bridge.
The bascule chambers are where the huge counterweights for the bridge slide into when the bride opens, and are a hidden surprise under the main road bridge.
Bascule chamber (c) Tower Bridge
The tours take in the main tourist areas, but then you are taken away from the tourists to get up close to th